preposition
without
wih-THOWT/wɪˈðaʊt/
lacking or not accompanied by something
The child arrives at the picnic without a lunchbox.

Etymology
“Against the outside” originally described being outside something. The meaning shifted from external position to absence or lack, giving the sense of not having something.
In context
but without a centralized headquarters.
works on iPads and laptops without the headsets.
More examples
- We managed without a car.
- She smiled without saying anything.
- Coffee tastes fine without sugar.
Forms
without